High-performance nanoribbon-like CuV2O5 hybrid composite as a bifunctional electrode for rechargeable batteries

• Published in: Journal of alloys and compounds 2023-12, Vol.968, p.172096, Article 172096
• Main Authors: Santhoshkumar, P., Subburaj, T., Vikraman, Dhanasekaran, Karuppasamy, K., Kathalingam, A., Kim, Hyun-Seok
• Format: Article
• Language: English
• Subjects: Bifunctional, conductivity; Composite; Hybrid; Hydrothermal; Morphology
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2023.172096

A nanoribbon-like CuV2O5 hybrid composite material, with a width of 100 nm, was prepared by hydrothermal technique with different reaction time followed by drying process. Structural and morphological characterization of the hybrid composite confirmed its phase arrangement, composition, and nanoribbon-like morphology. The formation reaction mechanism was investigated using time-dependent variables of the hydrothermal reaction, and electrochemical analysis demonstrated a good cyclic behavior. As an anode, the CVO-24 h hybrid composite exhibits the first galvanostatic discharge capacity ∼852 mAh g−1 at an operating current density of 100 mA g−1, whereas when used as positive electrode material, the synthesized hybrid composite exhibited the galvanostatic charge capacity ∼251 mAh g−1 at an operating current density of 50 mA g−1. An improvement in electrochemical properties can be attributed to the metallic copper present in the hybrid structure, which enhances electronic conductivity. Additionally, their porous nanoribbon-like structure promotes Li intercalation and de-intercalation efficiently. [Display omitted] •We prepared CuV2O5 (CVO) bifunctional electrode materials by hydrothermal technique.•CVO-24 h with large surface area affords high surface active sites.•CVO-24 h electrode achieve stable, prolonged cycling and rate capability due to the ultrathin ribbon-like structure.•The fabricated CVO-24 h achieves the specific capacity of 574 mAh g−1 after 300 cycles at 1600 mA g−1.